280 lines
6.3 KiB
C
280 lines
6.3 KiB
C
/*
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* Copyright (C) 2007 Sascha Hauer, Pengutronix
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <common.h>
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#include <init.h>
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#include <environment.h>
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#include <asm/armlinux.h>
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#include <generated/mach-types.h>
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#include <nand.h>
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#include <sizes.h>
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#include <mach/board.h>
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#include <mach/at91sam9_smc.h>
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#include <gpio.h>
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#include <mach/io.h>
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#include <mach/iomux.h>
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#include <mach/at91_rstc.h>
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#include <linux/clk.h>
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/*
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* board revision encoding
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* bit 0:
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* 0 => 1 mmc
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* 1 => 2 mmcs (board from revision C)
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*/
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#define HAVE_2MMC (1 << 0)
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static void ek_set_board_type(void)
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{
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if (machine_is_at91sam9g20ek()) {
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armlinux_set_architecture(MACH_TYPE_AT91SAM9G20EK);
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if (IS_ENABLED(CONFIG_AT91_HAVE_2MMC))
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armlinux_set_revision(HAVE_2MMC);
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} else {
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armlinux_set_architecture(MACH_TYPE_AT91SAM9260EK);
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}
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}
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static struct atmel_nand_data nand_pdata = {
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.ale = 21,
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.cle = 22,
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.det_pin = -EINVAL,
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.rdy_pin = AT91_PIN_PC13,
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.enable_pin = AT91_PIN_PC14,
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.on_flash_bbt = 1,
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};
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static struct sam9_smc_config ek_9260_nand_smc_config = {
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.ncs_read_setup = 0,
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.nrd_setup = 1,
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.ncs_write_setup = 0,
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.nwe_setup = 1,
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.ncs_read_pulse = 3,
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.nrd_pulse = 3,
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.ncs_write_pulse = 3,
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.nwe_pulse = 3,
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.read_cycle = 5,
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.write_cycle = 5,
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.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
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AT91_SMC_EXNWMODE_DISABLE,
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.tdf_cycles = 2,
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};
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static struct sam9_smc_config ek_9g20_nand_smc_config = {
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.ncs_read_setup = 0,
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.nrd_setup = 2,
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.ncs_write_setup = 0,
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.nwe_setup = 2,
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.ncs_read_pulse = 4,
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.nrd_pulse = 4,
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.ncs_write_pulse = 4,
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.nwe_pulse = 4,
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.read_cycle = 7,
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.write_cycle = 7,
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.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
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AT91_SMC_EXNWMODE_DISABLE,
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.tdf_cycles = 3,
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};
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static void ek_add_device_nand(void)
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{
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struct sam9_smc_config *smc;
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if (machine_is_at91sam9g20ek())
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smc = &ek_9g20_nand_smc_config;
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else
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smc = &ek_9260_nand_smc_config;
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/* setup bus-width (8 or 16) */
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if (IS_ENABLED(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)) {
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nand_pdata.bus_width_16 = 1;
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smc->mode |= AT91_SMC_DBW_16;
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} else {
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smc->mode |= AT91_SMC_DBW_8;
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}
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/* configure chip-select 3 (NAND) */
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sam9_smc_configure(0, 3, smc);
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at91_add_device_nand(&nand_pdata);
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}
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static struct macb_platform_data macb_pdata = {
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.phy_interface = PHY_INTERFACE_MODE_RMII,
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.phy_addr = 0,
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};
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static void at91sam9260ek_phy_reset(void)
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{
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unsigned long rstc;
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struct clk *clk = clk_get(NULL, "macb_clk");
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clk_enable(clk);
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at91_set_gpio_input(AT91_PIN_PA14, 0);
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at91_set_gpio_input(AT91_PIN_PA15, 0);
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at91_set_gpio_input(AT91_PIN_PA17, 0);
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at91_set_gpio_input(AT91_PIN_PA25, 0);
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at91_set_gpio_input(AT91_PIN_PA26, 0);
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at91_set_gpio_input(AT91_PIN_PA28, 0);
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rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL;
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/* Need to reset PHY -> 500ms reset */
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at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
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(AT91_RSTC_ERSTL & (0x0d << 8)) |
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AT91_RSTC_URSTEN);
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at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
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/* Wait for end hardware reset */
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while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL))
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;
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/* Restore NRST value */
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at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY | (rstc) | AT91_RSTC_URSTEN);
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}
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/*
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* MCI (SD/MMC)
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*/
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static struct atmel_mci_platform_data __initdata ek_mci_data = {
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.bus_width = 4,
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.slot_b = 1,
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.detect_pin = -EINVAL,
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.wp_pin = -EINVAL,
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};
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static void ek_usb_add_device_mci(void)
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{
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if (!IS_ENABLED(CONFIG_MCI_ATMEL))
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return;
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if (machine_is_at91sam9g20ek())
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ek_mci_data.detect_pin = AT91_PIN_PC9;
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at91_add_device_mci(0, &ek_mci_data);
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}
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/*
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* USB Host port
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*/
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static struct at91_usbh_data __initdata ek_usbh_data = {
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.ports = 2,
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.vbus_pin = { -EINVAL, -EINVAL },
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};
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/*
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* USB Device port
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*/
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static struct at91_udc_data __initdata ek_udc_data = {
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.vbus_pin = AT91_PIN_PC5,
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.pullup_pin = -EINVAL, /* pull-up driven by UDC */
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};
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struct gpio_led leds[] = {
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{
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.gpio = AT91_PIN_PA6,
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.active_low = 1,
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.led = {
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.name = "ds5",
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},
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}, {
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.gpio = AT91_PIN_PA9,
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.led = {
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.name = "ds3",
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},
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},
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};
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static void __init ek_add_led(void)
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{
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int i;
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if (IS_ENABLED(CONFIG_AT91_HAVE_2MMC)) {
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leds[0].gpio = AT91_PIN_PB8;
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leds[1].gpio = AT91_PIN_PB9;
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}
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for (i = 0; i < ARRAY_SIZE(leds); i++) {
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at91_set_gpio_output(leds[i].gpio, leds[i].active_low);
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led_gpio_register(&leds[i]);
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}
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led_set_trigger(LED_TRIGGER_HEARTBEAT, &leds[1].led);
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}
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static int at91sam9260ek_mem_init(void)
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{
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at91_add_device_sdram(0);
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return 0;
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}
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mem_initcall(at91sam9260ek_mem_init);
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static void __init ek_add_device_buttons(void)
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{
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at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
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at91_set_deglitch(AT91_PIN_PA30, 1);
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export_env_ull("dfu_button", AT91_PIN_PA30);
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at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
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at91_set_deglitch(AT91_PIN_PA31, 1);
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export_env_ull("btn4", AT91_PIN_PA31);
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}
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static int at91sam9260ek_devices_init(void)
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{
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ek_add_device_nand();
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at91sam9260ek_phy_reset();
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at91_add_device_eth(0, &macb_pdata);
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at91_add_device_usbh_ohci(&ek_usbh_data);
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at91_add_device_udc(&ek_udc_data);
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ek_usb_add_device_mci();
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ek_add_device_buttons();
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ek_add_led();
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armlinux_set_bootparams((void *)(AT91_CHIPSELECT_1 + 0x100));
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ek_set_board_type();
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devfs_add_partition("nand0", 0x00000, SZ_128K, DEVFS_PARTITION_FIXED, "at91bootstrap_raw");
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dev_add_bb_dev("at91bootstrap_raw", "at91bootstrap");
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devfs_add_partition("nand0", SZ_128K, SZ_256K, DEVFS_PARTITION_FIXED, "self_raw");
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dev_add_bb_dev("self_raw", "self0");
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devfs_add_partition("nand0", SZ_256K + SZ_128K, SZ_128K, DEVFS_PARTITION_FIXED, "env_raw");
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dev_add_bb_dev("env_raw", "env0");
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devfs_add_partition("nand0", SZ_512K, SZ_128K, DEVFS_PARTITION_FIXED, "env_raw1");
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dev_add_bb_dev("env_raw1", "env1");
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return 0;
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}
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device_initcall(at91sam9260ek_devices_init);
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static int at91sam9260ek_console_init(void)
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{
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at91_register_uart(0, 0);
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return 0;
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}
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console_initcall(at91sam9260ek_console_init);
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static int at91sam9260ek_main_clock(void)
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{
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at91_set_main_clock(18432000);
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return 0;
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}
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pure_initcall(at91sam9260ek_main_clock);
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